DISPLAY CONTROL APPARATUS AND DISPLAY CONTROL METHOD

• US 20080074444A1
• Filed: 09/14/2007
• Published: 03/27/2008
• Est. Priority Date: 09/26/2006
• Status: Active Grant

• Current Assignee: Spectrio
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Fukuda, Tetsu, Morikawa, Kenichi, Aratani, Shuntaro
• Granted Patent: US 7,924,297 B2
• Time in Patent Office: Days
• US Class Current: 345/660
• CPC Class Codes: G09G 2320/08 Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2340/0414 Vertical resolution change
• CPC Class Codes: G09G 2340/0421 Horizontal resolution change
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/59 involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution

Abstract

An image control apparatus includes a signal-receiving unit to which image signals are input, a resolution detecting unit configured to detect the resolution of the input image signals, a viewing-distance detecting unit configured to detect a viewing distance between a viewer and a display apparatus, a display-size control unit configured to control a display size of images displayed in the display apparatus, a scaling unit, and an output unit configured to output the images scaled by the scaling unit to the display apparatus. When the resolution of images is changed, the scaling unit scales the image signals in accordance with the amount of change in resolution and the viewing distance, and outputs the signals to the display apparatus.

Claims

1. An image control apparatus, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

a resolution detecting unit configured to detect the resolution of the input image signals;

a viewing-distance detecting unit configured to detect a viewing distance between a viewer and the display apparatus;

a display-size control unit configured to control a display size of images displayed in the display apparatus;

a scaling unit configured to convert the resolution of the image signals; and

an output unit configured to output the images scaled by the scaling unit to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display-size control unit controls the display size of images displayed using the image signals after the resolution change based on an amount of change in resolution and the viewing distance.

2. The image control apparatus according to claim 1, wherein the display-size control unit controls the display size such that the display size after the resolution change is reduced as the amount of change in resolution is increased and such that the display size after resolution change is increased as the viewing distance is increased.

3. An image control apparatus, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

a resolution detecting unit configured to detect the resolution of the input image signals;

a screen-size acquiring unit configured to acquire a screen size of the display apparatus;

a display-size control unit configured to control a display size of images displayed in the display apparatus;

a scaling unit configured to convert the resolution of the image signals; and

an output unit configured to output the images scaled by the scaling unit to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display-size control unit controls the display size of images displayed using the image signals after the resolution change based on an amount of change in resolution and the screen size.

4. The image control apparatus according to claim 3, wherein the display-size control unit controls the display size such that the display size after the resolution change is reduced as the amount of change in resolution is increased and such that a ratio of the display size to the screen size is reduced as the screen size is increased.

5. An image control apparatus, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

a resolution detecting unit configured to detect the resolution of the input image signals;

a timer unit configured to measure a viewing duration;

a display-size control unit configured to control a display size of images displayed in the display apparatus;

a scaling unit configured to convert the resolution of the image signals; and

an output unit configured to output the images scaled by the scaling unit to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display-size control unit controls the display size of images displayed using the image signals after the resolution change based on an amount of change in resolution and the viewing duration.

6. The image control apparatus according to claim 5, wherein the display-size control unit controls the display size such that the display size after the resolution change is reduced as the amount of change in resolution is increased and such that the display size after the resolution change is reduced as the viewing duration before the resolution change is increased.

7. An image control method, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

detecting the resolution of the input image signals; and

controlling a display size of images displayed in the display apparatus by generating output signals by converting the resolution of the image signals and outputting the output signals to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display size of images displayed using the image signals after the resolution change is controlled based on an amount of change in resolution and a viewing distance between a viewer and the display apparatus during controlling of the display size.

8. An image control method, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

detecting the resolution of the input image signals;

acquiring a screen size of the display apparatus; and

controlling a display size of images displayed in the display apparatus by generating output signals by converting the resolution of the image signals and outputting the output signals to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display size of images displayed using the image signals after the resolution change is controlled based on an amount of change in resolution and the screen size during controlling of the display size.

9. An image control method, converting a resolution of input image signals and outputting the image signals to a display apparatus, comprising:

detecting the resolution of the input image signals;

measuring a viewing duration; and

controlling a display size of images displayed in the display apparatus by generating output signals by converting the resolution of the image signals and outputting the output signals to the display apparatus,

wherein, when the resolution of the input image signals is changed, the display size of images displayed using the image signals after the resolution change is controlled based on an amount of change in resolution and the viewing duration during controlling of the display size.